Paul Kevin Men's 5-Pack See Through Side Mesh Trunk The label size is our size, Not US Size, pls pay attention to the product images and description, find the right size. If you are not sure the size, please buy one size bigger than your regular size. M, Waist: 25-34 inch L, Waist: 27-35 inch X-Large, Waist: 29-37 inch Example: A man height: 5'6", weight: 121-132 lbs, the best option is size L.